/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package androidx.compose.ui.demos.viewinterop

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.size
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.platform.ComposeView
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.unit.IntSize
import androidx.compose.ui.unit.round
import androidx.compose.ui.viewinterop.AndroidView

@Composable
fun ResizeComposeViewDemo() {
    var size by remember { mutableStateOf(IntSize(0, 0)) }
    Box(
        Modifier.fillMaxSize().pointerInput(Unit) {
            awaitPointerEventScope {
                while (true) {
                    val event = awaitPointerEvent()
                    event.changes.forEach { it.consume() }
                    val change = event.changes.firstOrNull()
                    if (change != null) {
                        val position = change.position.round()
                        size = IntSize(position.x, position.y)
                    }
                }
            }
        }
    ) {
        with(LocalDensity.current) {
            AndroidView(
                factory = { context ->
                    ComposeView(context).apply {
                        setContent { Box(Modifier.fillMaxSize().background(Color.Blue)) }
                    }
                },
                modifier = Modifier.size(size.width.toDp(), size.height.toDp()),
            )
            Text("Touch the screen to change the size of the child ComposeView")
        }
    }
}
